dzhokhar tsarnaev. we know the older brother tamerlan tsarnaev is dead. we know two people in custody, not necessary related, that live in the apartment that these two brothers live in. willie, you have been covering things overnight. give us the tick talk through that convenience store robbery to where we are right now. >> as pete williams is pointing out for us this morning this came out because of the actions of these two alleged terrorists. they decided to rob a 7-eleven at 10:20 in cambridge. they went and murdered a police officer sitting in his vehicle at m.i.t. that led to a carjacking. they took a black mercedes suv. they held at gunpoint the driver of that car for 30 minutes before releasing the driver unharmed. at that point, there's a chase and authorities come into the town of watertown, as mike barnicle described it for us this morning. a bedroom community of 32,000 people and there was a shootout in the streets of watertown. suspect number one. the one we have come to known in the black hat. was on the ground. authorities found him with an